if (pfrom.getFactor().equals(pto.getFactor())) for (int i = 0; i < pfrom.sizeWithoutFactor(); ++i) if (pfrom.getWithoutFactor(i).hashCode() != pto.getWithoutFactor(i).hashCode()) return IndexMappingProvider.Util.EMPTY_PROVIDER; ProductContent fromContent = pfrom.getContent(), toContent = pto.getContent();